Improvement in lanterns



A, R. CRlHFIELD.

Lantern.

No. 63,480. Patented April 2,1867.

230317288365: fm en/Jv/ UNITED STATES PATENT OEEIoE.

AYLETT It. ORIHFIELD,

OF LINCOLN, ILLINOIS.

lM PROVEM ENT IN LANTERNS.

Specification forming part of Letters Patent No. 63,480, dated April 2, 1867.

To all whom it may concern:

Be it known that I, AYLEIT R. ORIHFIELD, of the city of Lincoln, county of Logan, and State of Illinois, have invented a new and useful Improvement in Lanterns for Burning Kerosene or Coal-Oil for outdoor use; and 1 do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in such a manner of protecting the supply of air which feeds the illuminating-fiame as to counteract the effect of the sudden vibrations of air, or stoppages or checks which heretofore have eX- tinguished the illuminating -flame, or prevented perfect combustion and produced smoke and gases. To do this, I supply the air which feeds the flame with oxygen by placing a pipe or pipes below the flame and bringing said pipe or pipes up through or around the glass globe or lantern, and inclose the upper end of said pipe or pipes inside of an air-chamber which contains the heated air which escapes from the inside of the glass globe or lantern. I insert in the top of the globe or lantern a chimney of metal, and then surround said chimney with one, two, or more cylinders, (and if more than two, the intermediate cylinder or cylinders between the chimney and the outer cylinder should be perforated,) by means of which the heated air is gradually diffused till it reaches the ends or months of the said air pipe or pipes. In this way the escape of heated air, or the exhaust is connected with the same chamber or place as the supply, and any vibrations of air, in order to affect the current that supplies the illuminating-flame, must pass through the chamber of heated air above, and any vibration of air which may be forced down the chimney or draft-tube is at the same time forced down the supply pipe or pipes, which has the effect of keeping up an equilibrium of air in contact with the flame and preventing sudden stoppages. In this way I am enabled to get a steady blaze, with good combustion, either for movable or stationary outdoor lights.

To enable others skilled in the art to make and use my invention, I will proceed-to describe its construction and operation.

Figure l is an elevation of an outdoor lantern constructed and arranged according to my. invention. Fig. 2 is a vertical section of the upper portion of the lantern, and Fig. 3 is a vertical section of the base.

Like letters refer to the same parts in all the figures.

A is the glass globe or lantern-case. B is the base of the lamp, forming an air-chamber, from which air is supplied to the flame. B is the oil-cup, and b is the cone or deflector. O C is the upper portion of the lantern, containing the metal chimney and the hot-air chamber surrounding it. D is the metal chimney and D a circular disk, supported on two narrow strips of metal, at and rt, above the top of the chimney. E is a perforated cylinder, surrounding the chimney and attached to the cover E. F is the outer cylinder, having perforations f fnear its base, and '6 t' is an annular perforated plate, extending from the outer cylinder to the perforated cylinder E. P P P are three air-pipes, extending from the airchamber in the base of the lantern to the hotair chamber above the glass globe, and also serving as guards to the glass globe or lanterncase. There should be some perforations in the bottom of the lower air-chamber to admit air to the flame from below when the lantern is suddenly lowered.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. A hot-air chamber above the glass globe orlantern-case, in combination with an air pipe or pipes to conduct the heated air therefrom to the chamber in the base, from which the illuminating-flame is fed with oxygen, substantially as and for the purpose described.

2. I claim so arranging the air-conducting pipes P P P as to serve the purpose of guards to the glass globe or lantern-ease, as well as that of conducting air to the lower air-chamber, substantially as described.

AYLEIT R. GRIHFIELI).

IVitnesses F. W. FRIsBIE, D. H. IIARTS. 

